chips - Chips and Technologies video driver
Section "Device"
Identifier "devname"
Driver "chips"
...
EndSection
chips is an Xorg driver for Chips and Technologies video processors. The
majority of the Chips and Technologies chipsets are supported by this driver.
In general the limitation on the capabilities of this driver are determined by
the chipset on which it is run. Where possible, this driver provides full
acceleration and supports the following depths: 1, 4, 8, 15, 16, 24 and on the
latest chipsets an 8+16 overlay mode. All visual types are supported for depth
1, 4 and 8 and both TrueColor and DirectColor visuals are supported where
possible. Multi-head configurations are supported on PCI or AGP buses.
The chips driver supports video processors on most of the bus types
currently available. The chipsets supported fall into one of three
architectural classes. A basic architecture, the WinGine
architecture and the newer HiQV architecture.
Basic Architecture
The supported chipsets are ct65520, ct65525, ct65530, ct65535,
ct65540, ct65545, ct65546 and ct65548
Color depths 1, 4 and 8 are supported on all chipsets, while
depths 15, 16 and 24 are supported only on the 65540, 65545, 65546
and 65548 chipsets. The driver is accelerated when used with the
65545, 65546 or 65548 chipsets, however the DirectColor visual
is not available.
Wingine Architecture
The supported chipsets are ct64200 and ct64300
Color depths 1, 4 and 8 are supported on both chipsets, while
depths 15, 16 and 24 are supported only on the 64300 chipsets. The
driver is accelerated when used with the 64300 chipsets, however the
DirectColor visual is not available.
HiQV Architecture
The supported chipsets are ct65550, ct65554, ct65555, ct68554,
ct69000 and ct69030
Color depths 1, 4, 8, 15, 16, 24 and 8+16 are supported on all
chipsets. The DirectColor visual is supported on all color depths except the
8+16 overlay mode. Full acceleration is supplied for all chipsets.
Please refer to xorg.conf(5) for general configuration details. This section
only covers configuration details specific to this driver.
The driver auto-detects the chipset type, but the following
ChipSet names may optionally be specified in the config file
"Device" section, and will override the auto-detection:
"ct65520", "ct65525",
"ct65530", "ct65535", "ct65540",
"ct65545", "ct65546", "ct65548",
"ct65550", "ct65554", "ct65555",
"ct68554", "ct69000", "ct69030",
"ct64200", "ct64300".
The driver will auto-detect the amount of video memory present for
all chipsets. But maybe overridden with the VideoRam entry in the
config file "Device" section.
The following driver Options are supported, on one or more
of the supported chipsets:
- Option "NoAccel" "boolean"
- Disable or enable acceleration. Default: acceleration is enabled.
- Option "NoLinear" "boolean"
- Disables linear addressing in cases where it is enabled by default.
Default: off
- Option "Linear" "boolean"
- Enables linear addressing in cases where it is disabled by default.
Default: off
- Option "HWCursor" "boolean"
- Enable or disable the HW cursor. Default: on.
- Option "SWCursor" "boolean"
- Enable or disable the SW cursor. Default: off.
- Option "STN" "boolean"
- Force detection of STN screen type. Default: off.
- Option "UseModeline"
"boolean"
- Reprogram flat panel timings with values from the modeline. Default:
off
- Option "FixPanelSize"
"boolean"
- Reprogram flat panel size with values from the modeline. Default: off
- Option "NoStretch" "boolean"
- This option disables the stretching on a mode on a flat panel to fill the
screen. Default: off
- Option "LcdCenter" "boolean"
- Center the mode displayed on the flat panel on the screen. Default:
off
- Option "HWclocks" "boolean"
- Force the use of fixed hardware clocks on chips that support both fixed
and programmable clocks. Default: off
- Option "UseVclk1" "boolean"
- Use the Vclk1 programmable clock on HiQV chipsets instead of Vclk2.
Default: off
- Option "FPClock8" "float"
- Option "FPClock16" "float"
- Option "FPClock24" "float"
- Option "FPClock32" "float"
- Force the use of a particular video clock speed for use with the flat
panel at a specified depth
- Option "MMIO" "boolean"
- Force the use of memory mapped IO for acceleration registers. Default:
off
- Option "FullMMIO" "boolean"
- Force the use of memory mapped IO where it can be used. Default: off
- Option "SuspendHack"
"boolean"
- Force driver to leave centering and stretching registers alone. This can
fix some laptop suspend/resume problems. Default: off
- Option "ColorKey" "integer"
- Set the colormap index used for the transparency key for the depth 8 plane
when operating in 8+16 overlay mode. The value must be in the range 2-255.
Default: 255.
- Option "VideoKey" "integer"
- This sets the default pixel value for the YUV video overlay key. Default:
undefined.
- Option "ShadowFB" "boolean"
- Enable or disable use of the shadow framebuffer layer. Default: off.
- Option "SyncOnGreen"
"boolean"
- Enable or disable combining the sync signals with the green signal.
Default: off.
- Option "ShowCache" "boolean"
- Enable or disable viewing offscreen memory. Used for debugging only
Default: off.
- Option "18bitBus" "boolean"
- Force the driver to assume that the flat panel has an 18bit data bus.
Default: off.
- Option "Crt2Memory"
"integer"
- In a dual-head mode (69030 only) this option selects the amount of memory
to set aside for the second head. If not specified, half the memory is
used. Default: off.
- Option "DualRefresh"
"integer"
- The 69030 supports independent refresh rates on its two display channels.
This mode of operations uses additional memory bandwidth and thus limits
the maximum colour depth and refresh rate that can be achieved, and so is
off by default. Using this option forces the use of an independent refresh
rate on the two screens. Default: off.
- Option "FpMode" "boolean"
- The driver probes the chip to find out if a flat panel (LCD) is connected
and active. If this is true it limits the possible screen size to the
maximum resolution of the panel. The chips is initialized by the BIOS
which may set the chip to 'dual' mode even if no panel is connected. In
this case the available resolution on the CRT is limited to the panel size
the BIOS has set. To tell the driver that no panel is connected despite of
what the BIOS is saying set this option to off. Don't set it to off if a
panel is connected. Default: value probed by BIOS.
Xorg(1), xorg.conf(5), Xserver(1), X(7)
You are also recommended to read the README.chips file that comes
with all Xorg distributions, which discusses the chips driver in more
detail.
Authors include: Jon Block, Mike Hollick, Regis Cridlig, Nozomi Ytow, Egbert
Eich, David Bateman and Xavier Ducoin